No, Severstal has no scheduled flights out of Dublin. However, Severstal does fly out of Saint Petersburg Pulkovo. There are also other airline options to choose from if you still want to book a flight from Dublin. Smartavia, for example, is an airline that flies out of Dublin on a regular basis.
Cherepovets is the most popular airport that Severstal serves, followed by Moscow Sheremetyevo and Saint Petersburg Pulkovo.